L-Theanine 200 mg

product on market Softgel Capsule SportsResearch 🟢 Safety: 100/100
Brand: SportsResearch
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Softgel(s) Serving Size
60 Servings
Non-Nutrient/Non-Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

200 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 200mg

Other Ingredients

Organic Virgin Coconut Oil Beeswax kosher Gelatin non-GMO Vegetable Glycerin purified Water

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (92% of products) Nutrient (22% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested Use: As a dietary supplement, healthy adults take 1 liquid softgel daily with or without food. Best when taken as directed by a qualified healthcare professional.

⚠️ Warnings & Precautions

Contains: Tree Nuts (Coconut).

Caution: Keep out of reach of children and pets.

Caution: Keep out of reach of children and pets.

Consult with a qualified healthcare professional prior to using this product, especially if you are pregnant, nursing, have diagnosed medical conditions, or are taking prescription medications.

Do not exceed recommended daily intake. Do not use if safety seals is damaged or missing.

🧪 Formulation Notes

SR L-theanine featuring Suntheanine is a premium, Non-GMO form of L-theanine that may help support an alert state of relaxation without drowsiness. Formulated with Coconut Oil

Supports Relaxation & Focus IGEN Non-GMO Tested

Manufactured and Quality tested in USA. Ingredients carefully sourced from around the world.

Relaxation & Focus

Made with Suntheanine and coconut oil

Made with Non-GMO Ingredients Gluten Free

Good Manufacturing Practice cGMP Compliant

Not manufactured with: milk, eggs, fish, crustacean shellfish, peanuts, wheat, soy or gluten.

Produced in a third-party, audited and registered cGMP compliant facility that may process other products that contain these allergens or ingredients.

Additional Information

Satisfaction Guarantee We offer a full refund on the purchase price of your order (minus return cost) within 90 days of purchase. Restrictions apply. Please visit sportsresearch.com for full details.

Track your lot number, and view third party independent testing. Sportsresearch.com

IGEN Informed Non-GMO choices www.igenprogram.com 3rd party quality testing

Store at room temperature, in a dry place. Protect product from excessive heat, freezing, humidity and light.

Product Details

UPC / SKU 0 23249 01017 3
DSLD Entry Date 2022-04-11
Product Type Non-Nutrient/Non-Botanical
Form Softgel Capsule
Brand SportsResearch
DSLD ID 267648
Data Updated 2026-04-11

Research Evidence

37 Research Sources
53 Avg Quality Score
22 Rct
10 Systematic Review
3 Meta Analysis
1 Clinical Trial
1 Openfda Safety
B Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials
Systematic Review Nutritional neuroscience 2026
PubMed DOI
B The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Meta Analysis Sleep medicine reviews 2025
PubMed DOI
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010
PubMed DOI
B Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
Rct Nutrients 2019
PubMed DOI
B The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
Systematic Review International journal of molecular sciences 2023
PubMed DOI
B Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Meta Analysis Nutrition reviews 2025
PubMed DOI
B Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
Rct Nutrients 2022
PubMed DOI
B Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study
Rct Nutritional neuroscience 2025
PubMed DOI
B The combined effects of L-theanine and caffeine on cognitive performance and mood
Rct Nutritional neuroscience 2008
PubMed DOI
B Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2014
PubMed DOI
View all evidence for L Theanine →

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